Amorphous silicate nanoparticles with controlled Fe-Mg pyroxene compositions - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Non-Crystalline Solids Année : 2016

Amorphous silicate nanoparticles with controlled Fe-Mg pyroxene compositions

Résumé

The production of amorphous pyroxene nanoparticles (~ 20 nm) with controlled Fe-Mg content is described. Homogenous particle compositions closely matching required target stoichiometries are obtained by drying a precursor gel under high vacuum conditions. The silicate nature of the particles is characterised using TEM, synchrotron radiation and FTIR. No oxide phase separation occurs, even at high Fe concentration. Structural domains exist within the nanoparticles that are typically ten times smaller than the physical particle size consistent with either a core-shell, or, random network with multiple embedded domains, particle structure. Thermal annealing below the crystallisation temperature allows the ordered domain size to be further reduced by a factor of ~ 2.
Fichier principal
Vignette du fichier
A Evans - Amorphous silicate nanoparticles with controlled Fe-Mg pyroxene compositions.pdf (1.97 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03138519 , version 1 (11-02-2021)

Identifiants

Citer

Stephen P. Thompson, Karine Demyk, Sarah J. Day, Aneurin Evans, Hugues Leroux, et al.. Amorphous silicate nanoparticles with controlled Fe-Mg pyroxene compositions. Journal of Non-Crystalline Solids, 2016, Journal of Non-Crystalline Solids, 447, pp.255-261. ⟨10.1016/j.jnoncrysol.2016.06.017⟩. ⟨hal-03138519⟩
68 Consultations
37 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More